a-ak aaaa aaac aaad aaar aaca aacc aacd aack aacr aada aadc aaka aara aarc aard acaa acac acad acar acca accc accd acda acdc ackd acr- acra acrc acrr adaa adac adad adak adar adcc adda addc addd addr adra akaa akar akca akka akr- akra arac arad arak arar arc- arca arda ardc arka arr- arra arrc arrk arrr c-cd caaa caac cac- caca cacc cack cacr cada cadc cadd cadr caka cara carc card cark carr ccaa ccac ccad ccar ccca cccc ccdc ccdr ccra ccrc cd-r cdaa cdac cdad cdda cddr ckac ckck ckrc ckrd crac crar crca crcc crcr crda crdc crkc daad daar daca dada daka dara darc dard dark darr dcca dccc dcra dcrk dddd ddrc dkdc draa drac drad drak drar drca drda drra kaaa kaak kaar kacc kacd kad- kada kadd kadr kaka kakc kakk kara kard kark karr kcaa kcac kcad kcar kcca kccc kccd kcck kccr kcda kcdc kcdd kcdr kckc kckk kckr kcrc kcrr kdaa kdac kdad kdak kdar kdca kdcc kdcd kdcr kddc kddd kddk kddr kdka kdkd kdkk kdkr kkaa kkac kkar kkcd kkck kkcr kkda kkdc kkdd kkkk kkrc kkrk kkrr krac krad krak krar krca krcc krcd krda krdc krdd krdr krka krkc krkd krkk krkr krrc krrk krrr raad raak rac- raca racc rack rada radc radd radr raka rakk rara rark rcac rccc rcdc rcrd rdac rrad rrrr